I recently had an unknown error with my Dell Inspiron 15 3521 that prohibits me from booting, and as I have a lot of sensitive/important data on it, I tried to boot Ubuntu from a DVD to try to recover my data. I don't know how to do this, as my BIOS does not have a boot order selection. Please assist.
It is from 2013, and runs Windows 8. I can get to the boot menu, I just can't find how to make it boot from the DVD drive.
dell inspiron 15 3521 boot menu
.